Improved railroad-car spring



,TH-F. ALLYN.

Car Spring.y

No. 98,732. -Pate'nted Jan. 11,1870.

v k u y WI/www5.' Inventar JW /KgA yJ N. PETERS, PHOTOJJTHOGRAPHER,WASNINGTGN, D c.

A waited gratta @WW @litt Letters Patent No. 98,7 32, dated January l1,187 0.`

. IMPROYED RAILROAD-CAR SPRING.

The Schedule referred to in these Letters Patent and making tparl; ofthe same.

To all whom it may concern.-

Beit known that I, TIMOTHY F. ALLYN, of the town of Nyack, county ofRockland, and 'State of lNew-York, have invented a new and usefulImprovement in 4ailway-Osar Springs# and I do hereby declare thefollowing to be a full, clear, and exact description of the constructionand'operation of the same, reference being had to the annexed drawings,making a part of this specification- Figure 1 representing a top view',and v Figure2, a sectional view o t my invention.

The` sameletters in each refer to the same parts thereof'.

My invention consists in the application to steel spring-plates, ofdouble fulcra ot' rubber, or other elastic substances, for theoentralparts of said plates to rest upon and freely vibrate, while said platesand rubbers are held firmly in position by,mea ns ,ofV a metallic band,that ,covers and encloses about onethird of the length ofthespring-plates, said rubber and 'platsf being' held firmly and securelyin position with n4 said band by means offwooden or other wedges, theplates being also riveted together centrally, the rivet having aprojecting head that enters a hole of corresponding size on the under.side of said band. Ou thetop side of said band a hole is made forthereception of a screw, that fastens firmly the wedges, band,` andplatestogether. This double elastic fulcrum 4may be applied tothe springin various ways, but I prefer the mode described herein, and shown inthe drawings. By the aforesaid construction, I ladd largely to thesustaining-power of the spring-plate, rendering it much more durable,and cheaper in production and manufacture, to the platespringe-generallyused. By lengthening or shortening this band, the sustaining-power ofthe spring can be graduated to the various forms of construction of thecars, and their varied weights.

My invention further consists in the `construction and arrangement uponthe ends of a bolster, or other suitable part of the truck-frame, aseries of cups, made of metal, so constructed that they shall receivewithin them, rubber or other elastic material, conforming nearly totheshape of such cups, and of width suilicient to receive theend ofthespringplates, thus relieving the latter from wear and abrasionconsequent upon contact with a metallic surface,

ald which also adds'. to the sustaining-power of the spring.

In the drawings-.- l A represents the bolster or frame of arailroad-car. B are 'the metallic cups, fastened in any secure ordesirable way to the same. C are pieces of rubber, fitting into andapproximating in form to the cups B.

D represents the spring-plates, of graduated lengths,

Vand of width-corresponding to'and with the cups B, 1 and resting uponthe rubber 0 within said cups.

E E are two pieces of rubber, or other elastic material, each heilig, inwidth, about one-third of the length of the band H.

The space between these pieces of rubber is lled, or nearly so, by aprojection formed on the lower side of the wedge F, which wedge maybeeither' of wood or metal.

G is a wedge, driven in between the top of the band H and wedgeF.

On the under side of the spring-plates D is Vplaced the rubber I, orother elastic substance,and all of the above spring-plates, rubber, andwedges are enclosed or surrounded by the metallic band H.

A rivet, K, holds the spring-plates firmly together,

and projects downward, through the rubber I, into` and through the lowerside of the band H. y

A screw, L, is applied to the upper portion of the band, running intothe two wedges F and G, holding s them firmly in position.

When this spring is thus adjusted, it is set `in and rests upon therubber contained in the cups aforesaid, and is ready for use. y

This spring may be made of plates Vof any desired length, breadth, orthickness, but for freight-cars I should prefer them oftwenty-fourtothirty-six inches in length, made of steel, six incheswide, and onequarter inch in. thickness, graduating the length of saidplates from the point where the upper'one projects fronr the band to theouter ends of the spring. y

This spring Vshould be made nearly'straight, as shown in the drawings,so that when it is working, or in op-v eration, itV will be contractedand'expandedlas little as possible.

I do not claiiua plate-spring broadly; but VVhat'l do claim, Aand desiretosecure by Letters Patent, is

1. rlhe construction and arrangement of a plate car-spring, havingfulcra of rubber, or other elastic material, contained within andsurrounded by a metallic band, in the manner herein described.

2. Ihe combination ofthe band Hwitlrthe platespring D, rubber E E, andwedges F and G, and ruband for the purpose ber I, in the manner and forthe purposes herein dei scribed.

3. The combination ofthe spring', as above constructed, with thexcups BB and rubber O C, or other elastic material, 'in the manner and for thepurpose herein described.

4.-Ihe within-described method of fastening the spring-plates together,by means of the rivet K,

when the same projects downward into the band H,

therebypreventing. lateral displacement, as herein T. F. ALLYN.

. specified.

vWitnesses B. F. JAMES, G. MATHYs.

